import csv
import os

def save_oauth_providers(url, oauth_entries):
    csv_file = "./oauth_providers.csv"
    file_exists = os.path.isfile(csv_file)
    with open(csv_file, "a", newline="", encoding="utf-8") as f:
        writer = csv.writer(f)
        if not file_exists:
            writer.writerow(["issuer", "provider", "oauth_uri"])
        for entry in oauth_entries:
            writer.writerow([url, entry.provider or None, entry.oauth_uri or None])
    print(f"✅ OAuth providers saved to {csv_file}\n")